linux-kernel - Re: [PATCH v2 0/3] SiFive DDR controller and EDAC support

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Message-ID: <20200915152201.GA1940827@bogus>
Date:   Tue, 15 Sep 2020 09:22:01 -0600
From:   Rob Herring <robh@...nel.org>
To:     Yash Shah <yash.shah@...ive.com>
Cc:     palmer@...belt.com, paul.walmsley@...ive.com, bp@...en8.de,
        mchehab@...nel.org, tony.luck@...el.com, aou@...s.berkeley.edu,
        james.morse@....com, rrichter@...vell.com,
        devicetree@...r.kernel.org, linux-riscv@...ts.infradead.org,
        linux-kernel@...r.kernel.org, linux-edac@...r.kernel.org,
        sachin.ghadi@...ive.com
Subject: Re: [PATCH v2 0/3] SiFive DDR controller and EDAC support

On Mon, Sep 07, 2020 at 11:17:56AM +0530, Yash Shah wrote:
> The series add supports for SiFive DDR controller driver. This driver
> is use to manage the Cadence DDR controller present in SiFive SoCs.
> Currently it manages only the EDAC feature of the DDR controller.
> The series also adds Memory controller EDAC support for SiFive platform.
> It register for notifier event from SiFive DDR controller driver.

This is an odd split and notifiers aren't a great interface. Why not 
just combine these? Is there some other DDR controller functionality 
planned for the driver? 

FYI, highbank_mc_edac.c is also a Cadence controller. IIRC, the register 
layout changes for every customer/design.

Rob